Merge pull request #6611 from nextcloud/fix/query-builder-reuse

fix: Use new query builder

lib/Db/BoardMapper.php

@@ -211,7 +211,7 @@ public function findAllByUser(string $userId, ?int $limit = null, ?int $offset =
 		}
 
 		// shared with user
-		$qb->resetQueryParts();
+		$qb = $this->db->getQueryBuilder();
 		$qb->select('b.id', 'title', 'owner', 'color', 'archived', 'deleted_at', 'last_modified')
 			//->selectAlias('1', 'shared')
 			->from('deck_boards', 'b')